<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>渐变色</title>
		<style>
			#d1{
				height: 500px;
				width: 500px;
				background-image: radial-gradient(gold,red,green,yellow);
			}
		</style>
	</head>
	<body>
		<div id="d1">
			
		</div>
	</body>
</html>